Oral Histology MCQs

Page No. 18

A supernumerary tooth results from a deviation during_____________?


aInitiation

✓


b Differentiation

✖


cApposition

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d Calcification

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View Answer Initiation

Accessory canals result from____________?


aDefects in cementogenesis

✖


bDividing epithelial bridges

✖


cBreak in Hertwig’s root sheath

✓


dAdherent epithelial rests

✖



Following is derivative of dental lamina____________?


aEpithelial rests of Malassez

✖


bEnamel pearls

✖


cRests of serrae

✓


dAll of the above

✖


View Answer Rests of serrae

Hertwig’s epithelial root sheath is made up of_______________?


aOuter and inner enamel epithelium

✓


bStratum intermedium

✖


cStellate reticulum

✖


dHyaline layer of Hopewell-smill

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In considering the process of eruption, the pre-functional eruptive stage of a tooth begins when the_____________?


aBud stage begins

✖


bCap stage begins

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cBell stage begins

✖


d Dental lamina begins forming

✓



Ectodermal cells in tooth bud are responsible for_______________?


aDetermination of shape of crown and root

✓


b Formation of periodontal ligament

✖


cFormation of cementum

✖


dFormation of pulp

✖



Dental lamina is active up to_______________?


a1 year

✖


b 2 years

✖


c3 years

✖


d4 years

✓


View Answer 4 years

Dentinal tubules are______________?


aConcave

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bStraight

✖


cS0shaped

✓


dNone of the above

✖


View Answer S0shaped

Dead tracts in ground section appears as_____________?


aDentinal tubules

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bCoarse fibril bundles arranged at right angle to the dentinal surface

✖


cBlack in transmitted light and white in reflected light

✓


d White in transmitted light and dark in reflected light

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Which of the following dentinal layers is more mineralized______________?


aPeritubular dentin

✓


b Inter tubular dentin

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cDentinal tubules

✖


dCircum pulpal dentin

✖


View Answer Peritubular dentin

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